| 摘要 |
FIELD: mechanical engineering; armored vehicles designed for carrying money, valuables and securities; buildings and constructions with protected apertures. SUBSTANCE: hatch has body with hole whose axis is square to outer surface of body, rod, whose axis is parallel to body hole axis, installed for movement relative to body, cover connected with rod and installed for limited axial displacement and limited turning around rod axis between two extreme positions. In first position cover is arranged opposite to hole and is pressed to body, in second position cover is arranged at a distance from body and turned relative to hole in body. According to invention, hatch has at least one resilient member providing axial force applied to cover and directed to press cover to body in fist extreme position and building up torque directed to turn cover relative to hole in body into second extreme position. It has also guide arrangement designed for holding cover against turning relative to hole in body on part of its travel between first extreme position and intermediate position and holding the cover from axial displacement on other part of its travel between intermediate position and second extreme position. EFFECT: provision of quick opening and closing of hatch cover with preservation of reliability. |
